Chandelier



(mmel') J. CHASE.

' Chandelier. I No. 243,060. Patented June 21, 1881..

mm? A UNITED STATES PATENT OFFICE.

JAMES CHASE, OF ROCHESTER, NEW YORK.

Cl-lANDELlER.

SPECIFICATION forming part of Letters Patent No. 243,060, dated June 21, 1881. Application filed February 2, 1881. (No model.)

To all whom it may concern:

Be it known that'I, JAMES CHASE, of Rochester, Monroe county, New York,have invented certain Improvements in Vertically- AdjustableChandeliers, of which the followingis a specification.

The object of myinvention is to provide vertically-adjustablechandeliers with a means of suspension cheap and efficient, and withgreater safety and durability than others now in use. Its natureconsists in automatically locking chandeliers with a device which isselfreleasing while they are being raised and which shall securely holdin any desired adjustment any weight that the chandeliers are capable ofsustaining.

Figure lis a sectional elevation of my invention. Fig. 2 is a detachedelevation of the locking-slide a and section of rod G.

A represents in cross-section a rosette provided with a threaded socketto receive the pipe B, and also an opening to receive the screw 00, bywhich the said rosette may be securely attached to the ceiling above.The pipe B is preferably made to screw into the said rosette, when itlikewise becomes fixed in position. The inner pipe,D, is made to slidefreely within the outer pipe, B, while the latter may be lined at itslower end with any suitable material to prevent marring the outersurface of the inner pipe as it is moved up and down. A portion of theouter pipe is shown broken away to expose the upper end of the pipe Dand the device for locking the latter to the outer'pipe at any pointdesired. Said device is constructed as follows: At or near the upper endof the pipe I), and forming an integral part thereof, is an inclinedplane, which is preferably formed by cutting away from the pipe atwedge-shape piece, which increases in size from its upper end, andrigidly attaching, by means of solder or otherwise, either the piecethus taken out or any suitable lug to the vertical rod 0, as moreclearly shown in Fig. 2. Upon the upper end of the remaining portion ofthe pipe D, filling or substantially filling the pipe B, is placed thewasher d, to support the'coiled tension-sprin g S, and through whichextends the rod 0, the upper end thereof passing through the washer aand upset, which holds the spring in place. The movement of the slide aupon the inclined surface causes the upper end of the rod bearing thespring to move laterally, and in order to permit this movement thewasher is provided with a slot or opening of the required size.

The rod 0 extends down through the innerpipo, D, as indicated by thedotted lines o, and is threaded at its lower end to screw into the stemE of the knob F, as shown by dotted lines 1;, thus giving control of thelockingslide a from below.

In place of the knob F, aloop may be either formed on the lower end ofthe rod 0 or made separately and attached thereto.

To prevent the inner pipe from being entirely withdrawn when beingoperated, it may be slightly enlarged at or near its upper end and thelower end of the outerpipe correspondingly contracted, in which case theinner pipe is to be inserted at the upper end of the outer pipe beforeit is secured to the said rosette.

To the nibs I? P may be secured lampbaskets in the ordinary manner.

The office of the springS is principally to automaticallyraisethelocking-slide aon theinclined plane of theinnerpipe, so that theouter surfaces of the slide and the pipe shall actupon theinner wall oftheouter pipe, B, and therebyinsure the suspension of the lamps andfixtures at any desired adjustment, whether heavy or light.

It will be seen that in its upward movement the locking-slide isself-releasin g, and that said slide need only be withdrawn to lower thelight.

The shoulder at It serves to limit the downward movement of the slide aand prevents the setting of the spring S.

The outer pipes are made of various lengths to adapt them to differentheights of ceilings, the same as gas-fixtures.

The length of the inner pipe should be suffioient to permit any desireddrop of the light, and the parts thus lowered are indicated by thedotted lines below.

The advantages of this device over any other heretofore in use for thepurpose are its extra efficiency, cheapness, strength, safety, and.

durability.

I am aware that extension-chandeliers have been made of a telescopiccharacter, and that an inner tube sliding within an outer tube andprovided with an inclined surface has been secured by means of ablock orclamp sliding on the inclined surface and actuated by a spring. Mydevice differs from others in action in that the parts are arranged tocause it to unlock automatically when the extension member is pushedupward. This action is due to the fact that my locking slide or (log ismounted between and bears directly against both tubes, and is acted uponby a spring sustained and carried on the inner tube.

What I claim, and desire to secure by Letters Patent, is-

1. The combination of the external tube, the sliding internal tubeprovided with the downwardly and inwardlyinelined plane, the wedgebearing against both the inclined plane and the outer tube, and thespring seated and carried upon the inner tube and connected with thewedge, as shown.

2. An extension-chandelier which unlocks automatically when urgedupward,.the same embracing the combination of an outer tube, an innersliding tube with a seat or hearing inclined downward and inward, awedge seated on said bearing, and a spring-connection between the innertube and wedge, whereby the latter is forced upward as the inner tube isdrawn downward, but released as the tube is pushed upward.

3. The combination of fixed tube B, inner sliding tube, D, with theinclined face on one side, wedge a, washer d, spring S, and unlockin gdevice 0.

JAMES CHASE.

Witnesses:

WM. H. FARRAND, P. B. VIELE.

